Fuse-box.



No. 866,090. PATENTED SEPT. 1*'7, 1907. L. E.- TROUTMAN.

FUSE BOX.

APPLICATION FILED NOVfll. 1905.

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UNITED STATES] PATENT OFFICE.`

LEWIS E. TROUTMAN,

or sCIIENECT-ADY, NEW YORK, AssIGNOR To GENERAL ELECTRIC COMPANY, ACORPORATION OE NEW YORK. o

FUSE-BOX.

Specification of Letters Patent.

Patented sept. 17, 1907.

To all whom it may corwefn:

a Beit known that I, LEwIs TROUTMAN, a citizen of the United States,residing at Schenectady, county of Schenectady, and State of New York,have invented certain new and useful Improvements in Fuse-Boxes, ofwhich the following is a specification.

This invention relates to thermal cut-outs, and its object is to providea compact device of this class that is simple in construction, strongand durable, and capable of handling heavy currents.

The invention consists in a fuse-box containing lineterminals providedwith clips, and a removable fusecarrying block of novel construction, ashereinafter set forth and particularly pointed out in the claims; i

In the accompanying drawing, Figure 1 is a longitudinal section of afuse-box embodying my inventionl taken on the line 1 1, Fig. 3, andlooking from below Fig.2 is a similar section, On the line 2 2, Fig.3;Fig. 3 is a cross-section through the center of the box, and on the line3 3 of Fig. 4; Fig. 4 isa. longitudinal section of the fuse-carryingblock, on the line 4 4, Fig. V3.

The box l may be of cast metal, with lugs 2 for secur-y ing it to asuitable support. It'has a hinged front 3, which is preferably providedwith a spring bolt 4 for fastening it. An overhanging ange 5 preventsrain and dust from entering the joint when the box is exposed to theweather. In the bottom is an opening' to permit the escape of gases whenthe fuse blows.'

Near each end of the bottom at the rear is an opening provided with aninsulating bushing 7 for the line terminal, which is received in ametallic socket 8 provided with a-binding'i'screw 9 and located in arecess in a plate 10 of insulating material secured to the back of thebox.

Each socket has an arm-l1 extending over the base of a sheet-metal clipl2 and receiving a screw 13 by which the clip and socket are secured inplace. The clip is preferably a U-shaped strip of metal having in-turnedends, and it is preferably seated in a shallow recess in the plate 10adjacent to that recess in which the socket 8 is held.

The fusecarrier y14 is a blo-ck of porcelain or the like having a handle15, and provided with two recesses in its upper side separated by abarrier 16, and a single longer recess in its lower side. covered by aplate 17 of material, held place by a screw 18 meshing with a nut letinto the barrier A16. In each of the upper recesses is ametallic blade19, adapted to enter one of the clips 12, and secured in place by a bolt20 which through the The upper recesses are block and through the end ofthe lowerrecess, where it is provided with'a securing-nut 21, and alsoWith a' washer 22 and a clamping nut 23: the latter being for thepurpose of clamping one end of the fuse-strip 24 which electricallyconnects the two blades 19.

The fuse-strip 24 is covered by a block 25 of insulating material havinga recess in its upper side into which is snugly fitted a block 26 ofinsulating material which is held in the middle portion of the, recessin the fusecarrier. Both of the blocks 25, 26 are preferably made oflignum' vitae, and have cavities which register, so

that there is formed a chamber inclosing the middle' portion of thefuse-strip. A hole 2 7 in the block 25 connects this chamber'with aflaring mouth 28 which opens in line with the opening 6 in the bottom ofthe box and I be taken off, giving access to the clamping nuts 23,

which can thenbe loosened to release the unconsumed ends of the oldfuse. The fresh fuse is then laid across the block 26 and its ends areclamped in place by the nuts 23: The block 25 is then replaced and theknobs 29Ascrewed on, the over-lapping edges of the block 26 and therecess in the block 25 operating to crimp the fuse at each end of the4central chamber, so that all the gas produced by the melting of thefuse will be cornpelled to blew out through the arc chute. Thefusecarrier is then inserted in the box, the blades 19 entering theclips and closing the circuit between the line terminals. A l

It will be observed that the metallic parts of the fusecarrier arecompletely inclosed, so that it can be handled with entire safety.Moreover, the arc chute is directed away from thehandle of the carrier,so that there is less liability of injury to the operator in case thefuse blows when the carrier is replaced in the box.

What I claim as new and desire to secure by Letters Patent ofthe UnitedStates, is,

1. In a fuse-box', a fuse-carrier comprising a block havlng recesses inopposite sides `and n handle at one edge,

contact blades ln the recesses on one side and parallel to the plane ofsaid side, an inclosed fuse ln the recess on the opposite side, andbolts passing through said block and between said bolts saidb1ock`ha'ving a cavity, a cover` 10 connecting said blades and fuse. yblock having a registeringeavity and holes vfor: said bolts, Y 2. In afuse-box,v a fuse-carrier comprising a block of and knobs on 'the endsof' said bolts. l l insulating material having in one side two recessessepa- In witness whereof, Il have hereunto set my hand'this rated by abai-riet", and in the opposite side :t single recess, 10th day ofNovember, 1995. contact blades in the two pecesses on one side, holdingA LEWIS E. TROUTMAN. bolts for said blades passing through said blockinto the Witnesses: V -f ends of the recess on the opposite side,fuse-clamping nuts BENJAMIN 'B. HULL,

on said bolts, a`block of insulating material in the' recess MARGARETE.WOOLLY.

